Recently, the Automated Hydrazine Reduction method for Nitrate-Nitrite Analysis was added to the Federal Register. Referenced is Standard Methods: Nitrate-Nitrite (as N) mg/L, Automated Hydrazine, 4500-NO3 H-2016:

eCFR :: 40 CFR Part 136 -- Guidelines Establishing Test Procedures for the Analysis of Pollutants

Astoria-Pacific has therefore added this method to its list of available applications for the rAPID-T system, which has proven to be an affordable workhorse in many laboratories. It is a great system to be used as a primary, secondary, or backup system.

If you currently have a rAPID-T system, contact us for the method update. Or ... if you are looking for an additional system (isn't it always nice to have another system around?), contact us for a list of available applications and how to purchase a system for < $17,000 (in the USA).